Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual posição é o jogador que é do Canadá e joga no Boston Bruins
 ###Tabelas: CREATE TABLE round_five (round_five_id AUTO_INCREMENT PRIMARY KEY, Pick # VARCHAR, Player VARCHAR, Position VARCHAR, Nationality VARCHAR, NHL team VARCHAR, College/junior/club team VARCHAR) CREATE TABLE list_of_african_countries_by_gdp_per_capita (list_of_african_countries_by_gdp_per_capita_id AUTO_INCREMENT PRIMARY KEY, GDP (PPP) per capita 2010; African/World rank 2010; VARCHAR, Nation VARCHAR, GDP by agriculture 2010 VARCHAR, GDP by industry 2010 VARCHAR, GDP by services 2010 VARCHAR, Total GDP (PPP) 2010; African/World rank 2010; VARCHAR, GDP real growth rate 2010 VARCHAR) CREATE TABLE 2009_10_table (2009_10_table_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Played VARCHAR, Drawn VARCHAR, Lost VARCHAR, Points for VARCHAR, Points against VARCHAR, Tries for VARCHAR, Tries against VARCHAR, Try bonus VARCHAR, Losing bonus VARCHAR, Points VARCHAR) CREATE TABLE list_of_songs_released_in_2007 (list_of_songs_released_in_2007_id AUTO_INCREMENT PRIMARY KEY, Song title VARCHAR, Artist VARCHAR, Year INT, Genre VARCHAR, Single / Pack name VARCHAR, Release date VARCHAR, Family Friendly VARCHAR, Additional Rock Band 3 Features VARCHAR) CREATE TABLE indianapolis_500_results (indianapolis_500_results_id AUTO_INCREMENT PRIMARY KEY, Year INT, Chassis VARCHAR, Engine VARCHAR, Start VARCHAR, Finish VARCHAR, Team VARCHAR)  
SELECT Position FROM round_five WHERE Nationality = canada AND NHL team = boston bruins